Artificial limb



C. A. BLATCHF-ORD.

ARTIFICIAL ums.

. APPLICATION FILED JAN-24, 1918. i I I 7 9 I Patented Jan. 3,1922.

2 sHazw-snen 1.

C. A. BLATCHFORD.

ARTIFICIAL LIMB. APPLICATION FILED JAN-24.1918.

1,402,709. Patented Jan. 3, 1922.

2 SHEETS-SHEET 2.

II IIIII "IIHIIIIIII KxiLI'I'IIIIIIIIIIIIIIII-I ii I. llllllllullllllllllllllllml llll I I INVENTOR Ofid [fJ/Yfl/d/Zfifofd WITNESSES I I I 6 I BY.

ATTOR N EY rarest caries.

1 CHARLES ALBERT BLATOHFOBD, F LONDGN, ENGLAND.

To all whom itmay concern;

Be it known that I, GIL-nuns ALBERT BLATOHFORD,ELSHbjBQt of His Majesty the King of England, and resident of London, Kingdom of England, have invented certain new and useful Improvements in Artificial Limbs, of which he following is a specification.

This invention relates to artificial limbs.

The invention has for its obj set to provide an improved, simple, strong and durable adjustable andjointed device for attachment to artificial limbs, whereby tools and other implements, fittings or articles canbe detachably connected-thereto and manipu lated with ease and precision, and to provide a device ofthis character which is par ticularlyadaptedfor use as an elbow .joint on artificial arms. Y .1

The invention will now be described with reference to the accompanying drawings in which:.- A

Figure 1 is a; side elevation of a suitable construction of the improved attachment device,and f Figure 2 is an edge elevation ofthe same. FigureB is an elevation showing suitable means for securing the device to an artificial limb, and i Figure 4 is a sectional elevation of the same, the securing means in these two views being in their operative orlockingposition; y

, Figure 5 is an elevation showing the securing means unfastened; f 1

,Figure 6 is anunderneath plan ofFigure 3. I

Fig. 7 iSa front elevation of a human figure showing the invention applied thereto.

Fig.8 is a rear elevation of the same showing the attachment in an adjusted position. Fig. 9 is a cross-section on an enlarged scale of the device of the invention shown applied to a stump socket.

In the attachment device shown the outer side of, a disc a is formed with a pair of spaced' ears 6 between which an enlargement 0 of a stem piece d is pivoted at e. ()n one side of the enlargement c a quadrant f is formed, over which latter a control chain wire or cord, which passes up or is connected to the shoulder or back, is guided. 'Within this quadrant is a slot h the inner edge of which is formed with notchesi for engagement with a spring-pressed pivoted catch 5 which catch is adapted to be I Specification of Letters Patent.

en'rrrromi. LIME.

Patented. Jan. a, wee.

Application filed January 24, 1918. Serial No. 213,557.

actuated by the other hand or by means of a control secured at is and passing up to the shoulder. Thus, by means of the two con trols it is possible to move the stem'piece into any desired position, as indicated in full and dotted lines, without touching it with the other hand, and to secure it in its adjusted positions by means of the spring catch Any preferred fitting, tool, implement, artificial hand or article maybe secured to the end of the stem piece at to suit any particular requirements of the wearer, such as through the medium of a stem Z which may serve as a forearm. The plate or diskv a of the attachment device is permanently or detachably secured to a stump socket 8 which.

the like 9', andthe joint locking catch j is controlled by the control strap 15 through a wire or the like 16.

' The control strap 15 passes up over the shoulder of the wearer, as seen in Figure 7. By moving the stump socket as indicated in Fig. 8, the stem Z, which serves as a forearm, is moved into any desired angular po sition.

If it is desired at any time to render the members 0, (Z quite free on their pivot e the catch i can be held out of engagement with the notches i by means of a pivoted springpressed catch at adapted to engage over it.

Various means may be adopted for adjustably securing the device to the artificial limb, according to requirements. For instance, the haft a may be screwed into a plate provided at the end of a socket piece or bucket containing the stump of an upper den arm, and the part carrying said haft may a slotted socket formed on a disc 9 which is secured in any suitable manner to a socket piece or bucket on an artificial limb. The

disc a is formed with a numberof holes? any one of which is adapted to receive in ,cam the pin sis moved and retained out of tachably secured to engagement with the holes 1* when required. By positioning the came; in the manner indicated in Figure 5 the attachment device can be turned round bodily and axially on the disc 9 and adjusted to various positions in relation to the artificial limb to which it is secured.

What I claim is i v 1. An elbow joint for artificial limbs comprising two members pivoted to each other with one'member angularly adjustable relatively tothe other, means for locking the first named member in its various angularly adjustable positions, controlling means adapted to be supported across the back of the wearer to operate the first named meme ber and turn it on its pivot, and controlling means supported upon the shoulder for operating the locking means.

21in elbow joint or attachment device for artificial limbs, comprising a member dethe artificial limb and axially adjustable thereon, a second member pivoted on the firstmember and angularly adjustable in relation thereto, means for 7 locking the second member in its various anaxially adjustable gularly adjusted positions. means for operating the second member from the'body of the wearer, and'means for operating the locking means by hand or from the body.

'3. An elbow joint or attachment device for artificial limbs, comprising a member d6;

tachably secured to the artificial limb and axially adjustable'thereon, means for looking said. member in its various axially adjusted positions, a second member pivoted on the firstmember and angularly adjustable in relation thereto, means for locking the-second member in its various angularly adjusted positions. means for operating the second member from the body of the wearer,

and means for operating the locking means by hand or from the body.

4; An elbow joint or attachment device for artificial limbs, comprising a member detachably secured to the artificial limb and thereon, a second member pivoted on'the'first member and angularly adjustable in relation thereto, and provlded'with a series of notches and a quadrant, means co-operating with said notches for locking the second member in its various angularly adjusted positions, and means eo-operating with said quadrant for operating the second member from the body of the wearer. r V

5. An elbow joint or attachment device for artificial limbs, comprising a member detachably secured to the artificial limb and axially adjustable thereon, a second member f pivoted on the first member and angularly and provided adjustabl in relation thereto, 7 with a series of notchesv and a quadrant, a spring-pressed pivoted catch co-operating withv said notches for locking the second member in its various angularly'adjusted positions, and means co-operating with said member in its various positions, and a chain,

connected to the shoulders and/or back of the wearer. V I

7. An elbowjoint or attachment device for artificial limbs, comprising a member detachably secured to the artificial limb and axially adjustable thereon, a second member pivoted on the first member and angiilarly adjustable in relation thereto, and provided with a series of; notches and a quadrant, a spring-pressed pivoted catch co-operating with said notches for locking the second member in its various angularly adjusted positions, a second spring pressed pivoted catch for rendering the first catch inoperative, and means co-operatingWith said quad rant for operating the body of the wearer.

8. An elbow joint or attachment device for artificial limbs, comprising a disc detachably secured to the artificial limb and axially adjustable thereon, means for lockthe second member from ing said disc inits various axially adjusted positions, spaced ears on said disc, a'stem piece formed with an enlargement pivoted between said enlargement and to which is secured a' in said quadrant, and a spring-pressed piv oted catch for Y co-operation with said notches. i

9. An elbow for artificial limbs, comprising in combination a member adapted for detachable and rotary engagement with a slotted socketsecured to the artificial limb, a pin carried by a spring plate secured to the socket and adapted to said ears, a quadrant formed on having a feathered haft.

7 control chain, wire or cord, notches formed it joint or attachment device co-operate with a number of holes formed in the member, a campivoted on the spring plate and provided with a finger piece, a second member pivoted on the first member and angularly adjustable in relation thereto. means for locking the second member in its various angularly adjusted positions, and

.means for operating the second member from the body of the wearer.

10. An elbow joint for artificial limbs having means for attaching the joint to the stump of an arm, means whereby angular adjustments of the joint may be made, means for locking the joint in th various positions of angular adjustment, means controlled by the shoulder of the wearer for disengaging the locking means from its locking positions and means for holding the locking means in an inoperative position.

In testimony whereof I have hereunto signed my name.

CHARLES ALBERT BLATCHFORD. 

